assertThat(segment.remove(key, hash)).isNull();
    assertEquals(0, segment.count);

    // same value
    segment.setTableEntryForTesting(index, entry);
    segment.count++;
    assertEquals(1, segment.count);
    assertThat(segment.get(key, hash)).isEqualTo(oldValue);
    assertTrue(segment.remove(key, hash, oldValue));
    assertEquals(0, segment.count);
    assertThat(segment.get(key, hash)).isNull();

    assertThat(segment.remove(key, hash)).isNull();
    assertEquals(0, segment.count);

    // same value
    segment.setTableEntryForTesting(index, entry);
    segment.count++;
    assertEquals(1, segment.count);
    assertThat(segment.get(key, hash)).isEqualTo(oldValue);
    assertTrue(segment.remove(key, hash, oldValue));
    assertEquals(0, segment.count);
    assertThat(segment.get(key, hash)).isNull();

    assertThat(segment.get(key, hash)).isNull();

    // cleared
    table.set(index, entry);
    segment.count++;
    assertThat(segment.count).isEqualTo(1);
    assertThat(segment.get(key, hash)).isSameInstanceAs(oldValue);
    oldValueRef.clear();
    assertThat(segment.remove(key, hash)).isNull();
    assertThat(segment.count).isEqualTo(0);
    assertThat(segment.get(key, hash)).isNull();

    assertThat(segment.get(key, hash)).isNull();

    // cleared
    table.set(index, entry);
    segment.count++;
    assertThat(segment.count).isEqualTo(1);
    assertThat(segment.get(key, hash)).isSameInstanceAs(oldValue);
    oldValueRef.clear();
    assertThat(segment.remove(key, hash)).isNull();
    assertThat(segment.count).isEqualTo(0);
    assertThat(segment.get(key, hash)).isNull();

     */
    long sum = 0L;
    Segment<K, V, E, S>[] segments = this.segments;
    for (int i = 0; i < segments.length; ++i) {
      if (segments[i].count != 0) {
        return false;
      }
      sum += segments[i].modCount;
    }

    if (sum != 0L) { // recheck unless no modifications
      for (int i = 0; i < segments.length; ++i) {
        if (segments[i].count != 0) {
          return false;

     */
    long sum = 0L;
    Segment<K, V, E, S>[] segments = this.segments;
    for (int i = 0; i < segments.length; ++i) {
      if (segments[i].count != 0) {
        return false;
      }
      sum += segments[i].modCount;
    }

    if (sum != 0L) { // recheck unless no modifications
      for (int i = 0; i < segments.length; ++i) {
        if (segments[i].count != 0) {
          return false;

      for (Segment<K, V> segment : segments) {
        if (segment.count != 0) {
          return false;
        }
        sum -= segment.modCount;
      }
      return sum == 0L;
    }
    return true;
  }

  long longSize() {
    Segment<K, V>[] segments = this.segments;
    long sum = 0;
    for (Segment<K, V> segment : segments) {
      sum += segment.count;
    }

    Segment<Object, Object> segment = cache.localCache.segments[0];
    ConcurrentMap<Object, Object> map = cache.asMap();

    Object one = new Object();
    assertThat(cache.getUnchecked(one)).isSameInstanceAs(one);
    assertThat(segment.recencyQueue.isEmpty()).isTrue();
    assertThat(map.get(one)).isSameInstanceAs(one);
    assertThat(segment.recencyQueue.peek().getKey()).isSameInstanceAs(one);

    Segment<Object, Object> segment = cache.localCache.segments[0];
    ConcurrentMap<Object, Object> map = cache.asMap();

    Object one = new Object();
    assertThat(cache.getUnchecked(one)).isSameInstanceAs(one);
    assertThat(segment.recencyQueue.isEmpty()).isTrue();
    assertThat(map.get(one)).isSameInstanceAs(one);
    assertThat(segment.recencyQueue.peek().getKey()).isSameInstanceAs(one);

            Integer key = entry.getKey();
            cache.invalidate(key);
          }
        });
  }

  public void testEviction_lru() {
    // test lru within a single segment
    IdentityLoader<Integer> loader = identityLoader();
    LoadingCache<Integer, Integer> cache =
        CacheBuilder.newBuilder().concurrencyLevel(1).maximumSize(10).build(loader);
    CacheTesting.warmUp(cache, 0, 10);